Ill. Admin. Code tit. 35, § 813.401
c) Until closure has been completed, the operator shall maintain a copy of the closure plan at the site or at a definite location, specified in the permit, so as to be available during inspection of the site.
BOARD NOTE: 35 Ill. Adm. Code 807.Subpart E includes requirements for closure and temporary suspension and for closure and temporary suspension plans.